Earth-boring apparatus and method of making same



1,442,949 I F. A. INGALLS. EARTH BORJNj APPARATUS AND METHOD OF MAKING SA'ME.

FlLED Aus 22. 1921 v 3 SHEETSSHEET I ll atentednllan. 231, i923.

r l it FBJEDERIGKA. INGALIJS, OLE BREMEN, ILLINOIS, ESSIGNUR TO VIYM'AN-GORDON COlII- PANY, OF WORCESTER, MASSACHUSETTS, A GORPQBATION OF MASSACHUSETTS.

. EARTH-seems arraen'rus arm: MEJDJEIQD or tannins. SAME.

Application filed: August .22; 1921.? Serial No. 494.5643.

To aZZ whom z'tmag/ concern.

Beuit known that I, FREDERICK. INGALLS, a citizen of the United States, and a resident oi the township ol Bremen, in the county of Cook and State of Illinois have invented certain new and useful lmprovements in Eartli-Boring Apparatus and Methods of Making Same, of which the foli lowing is a specification; y

This llIVQDlJlOn: relatesto earth boring: ap

paratus and the method of making-the same 3 but more particularly to Jars for 1150111 drilling deep wells, and has forits primary object to economically produce a superior article'of this class. i i p i liurther objects otthe invention are to eliminate all welding llllzdillG production of the jar and thus-make possible the use of a higher grade of steel; to provideunt tormity in the physical; characteristics oi the steel throughout, andto provide a jar construction. which may be produced practically entirely by forging.

The well known-link type of jar is generally composed ottwo members or links,

one of which is formed solid or without joints, whereas the: other llnk ls ll'lltlflll closed link. i This open. link is closed subsequent to assembly. and the joints are quite,

company-lug drawings illustrating certainse- View.

lected embodiments thereof, in which Fig. l, is an elevation of the upper jar member at the completion of the initial forming operation. 1

Fig.2, isthev same as Fig. 1 but with one.

. of the reinsbent slightly outwardlyto per mit the interlinking. of this memberwitlr the lower jar member.

Fig. 34s the same as Fig.1,bottomiplan I have de-- vised aform: of. ar construction m WlllCll J F member.

Fig. 5 is an elevation oi? the jar lllustratis anelevation of the lower ing the method of interlinirnig the upper and lower members.

.liIgwGlS an elevation partiallyln section of the completed and assembled jar.

Fig. 7 an elevation ott a modified form oi; upper Jar member. 1

Figs. 8 and 9 are respectivelysections on the lines 8-8 and 9 90f Fig. (5;

Referring to the drawings the jar romprises two members 10' and, 11 which will hereinafter be referred to as the upper and the lower jar members respectively but it will be readily appreciated that the relative positions of these member-s may be reverseth The form of these members when completed and assembled is substantially the same with theexoeptlion that the upper membenis provided witha threaded tangjlQ for attachment to the lower end of the operating member and the lower member contains a. threaded socket" 13. to receive-theboring tool, as is customary in this-type. of The upper member 10 0t thewjar consists of in head 17 provided with reins l l and l5 open or formed of more than one piece to 1 permit assembly or interlinlring with the having theil"outer ends connected-by web 16. The rein. 15 forms. 2LI1BXtI1$lOII of I the head. The rein 14 is bent outwardly from the rein 15 sufficiently to permit the'assenibling on interlinkin'g of the members 10 and 11 in the manner illustrated in- Fig. 5.

Subsequent to i the assembling operatiom this:-

l'GIilbl/l is bent inwardly into parallel relatloni with the rem 15' and the inner end port-1011.01 this rein rests upon the seat 19 .in theheath. The enddirl' of the rein fits tightly againstthe shoulder 22 on the head advantageous; construction to be that shown in Figs. 1 to 6 inclusive in which an. in-

wardly projecting lug- 23 is formed on the rein to enter a perforationfi l in the head whenthe rein is bent inwardly. to -closethe links; The outer end? of this lug-is turned over to form a head fitting tightly within {theoonieal-enlargement 2510f the per-Foration. This lug absolutely rigidly binds the rein tothe head. The lug and perforation are preferably elliptical in cross section as indicated in Fig.

In the form of my invention shown in Fig. 7 of the drawings, the construction is practically the same as in the previously described embodiment with the exception that the binding lug has been omitted and oppositely disposed perforations 26 and 27 have been drilled through the rein 2S and the head 29. The inner end of the rein 28 is secured to the head 29 by a bolt or rivet (not shown) passed through these perforations after the rein has been bent into parallel relation with the opposite rein.

The jointed member 10 of the jar is ini tially formed between forging dies prefer-- ably in the shape indicated in Fig. 1 and the flash removed by a trimmer. The perforation 24 is then formed by drilling. The member is next preferably heated at 30 to facilitate the bending of the rein l l and this rein is then bent outwardly sutiiciently to permit the interlinking or assembling of the members of the jar. It will be readily evident that the rein 14 may be initially formed in this outer position but in practice it has been found more satisfactory to forge the rein in an intermediate position.

The member 11 is initially forged as shown in Fig. 4 and then the reins 31 and 32 are warped apart into the form indicated by dotted lines to permit the interlinking of the members. The members are then interlinked in the manner indicated in Fig. 5 and brought to the relative position shown in Fig. 6. The jar is next placed in an upsettingmachine and the rein l4 brought into parallel relation with the rein 15, forcing the lug 23 through the perforation 24 and turning over the end of the lug to form the head 33 fitting within the conical recess 25. The jar is then struck between forging dies to return the reins of the member 11 to their normal or parallel relation. The threading of the tang 12 and the socket may be performed either before or after the assembling of the jar members but this operation forms no part of the forging operation constituting the present invention.

The method of making the form of jar link shown in Fig. 7 is substantially the same as that described for the previous embodiment with the exception that perforations are drilled through both the head and the free rein. Upon the completion of the assembling operation, the rein 28 is bent into parallel relation with the fixed rein 34 and held tightly in this position while a bolt or rivet is inserted through the registering perforations 26 and 27. This bolt or rivetperforms the same function as the lug 28 in the previous embodiment.

This form of jar is as strong and durable as though both links were initially forged without joints and no welding is ncce r Very little strain comes on the joint during the drilling operation of the jar as the upper end of the lower member strikes against the shoulder 20 on the head. The lug securing the free end of the rein to the head is of greater strength than either of the reins so that a ruptmrc of the reins will take place before the joint will break. As no welding is necessary, a high-grade of steel may be used. The absence of wr-ldcd joints provides a uniformity in the physical characteristics of the metal throughout which is lacking in a jar having such joint: for it is well recognized that woldim weakens the steel about the joints.

The jar is practically completely prmlurod by forging and the process is a simple and economical one. When oncc assembled and completed the members or links composing the are permanently maintained in perfeet alignment and will not jam.

I am aware that many changes may be made in the form of the parts and the method of their production and assembly without departing from the spirit of my invention and I reserve the right to make all such as fairly fall within the scope of the following claims.

I claim as my invention:

1. A link comprising a head having a, rein forming an extension thereof. a second rein connected at its outer end to the outer end of the first mentioned rein. and means for attaching the inner end of the second rein to said head.

2. IL jar link comprising a one-piece head. having a rein. forming an extension thereof, a second rein connected at its outer end to the outer end of the first rein, and means for attaching the inner end of the second rein. to said head.

3. A. jar link comprising a head having a rein forming an extension thereof. a second rein connected at its outer end to the outer end of the first rein and having its inner end free, and means for providing an interlocking engagement between. said free end and said head.

4. A jar link comprising substantially parallel reins having their outer ends connected and their inner ends separatcd. and means for providing an interlocking cngagenient between the inner ends of said reins.

5. A jar link comprising a pair of substantially parallel reins having their outer ends connected and their inner ends separated, and means on one of said reins for engaging the other rein to provide a connection between said separated ends.

6. A jar link comprising a pair of substantially parallel reins having their outer ends connected and their inner ends separated, and a lug formed on one of said reins adapted to enter a corresponding socket in the other rein to form a connection between the mner ends of said reins.

7. A ar hnk comprislng a headhavlng a rein forming an extension thereof, a second head. i

8 A jar link comprising a head having a rein integral therewith and forming an extension thereof, a second rein connected at its outer end to the outer end of the first mentioned. rein and having its inner end free,

' and a lug on the free end of the secondrein adapted to be pressed through a perforation in said head and the outer end of the lug headed to form a permanent connection between said free end and said head.

9. The method of making a jar link which consists in initially forming the link between forging dies with the reins connected at one end and separate at the other end, and securing together the separated ends of the link.

1.0. The method of making a jar link which consists in forging the reins with their outer ends connected and a head formed on the free inner end of one of the reins, and attaching the free inner end of the other rein to said head.

11. The method of making a jar link which consists informing the reins with their outer ends connected and a perforation in the free inner end portionof one rein disposed opposite to a lug on the corresponding portion of the other rein, pressing the inner end portions of the reins together to insert the'lug in the perforation, and'upsetting the outer end of the lug to retain the lug within the'p'erforation and form a permanent connection between the inner ends of the reins.

FREDERICK A. INGALLS. 

